Spiral separator



May 15, 1923. I 1,454,904

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May 15, I923. 1,454,904 I F. PARDEE SPIRAL SEPARATOR Filed Oct. 11. 1921 4 Sheets-Sheet 5 wuemtoz FRHNK PHRDEE 33%{91/(15 WWW WWW Patented May 15, 1923.

stares asten rarest BATCH. COMPANY, A CORPORATION OF PENNSYLVANIA.

SPIRAL snrnnnzron.

Application filed October 11, 1921. Serial No. 507,109.

T 0 all whom it may concern:

Be it known that I, FRANK PARDEE, a citizen of the United States, and resident of Hazleton, Pennsylvania,have invented certain new and useful Improvements in Spiral Separators, of which the following is a specification. i

This invention relates to spiral separa: tors for handling various classes of lump material but particularly adapted for separating coal from impurities such as slate, rock, etc, which come to the separator in a mixture from the coalbreaker.

One object of the invention is to provide a spiral separator havinga series of closely arranged ridges adapted to jointly support the lumps of material while on their journey along the runway. Another object is to provide a spiral-runway formed'with ridges arranged to exert .an edge resistance or friction on the material travelling thereon. A

further object is to provide ridges so shaped that they control the direction of travel of the materials handled. Other objects'will be apparentfrom the following description whenread in connection with the accompanying drawings, in which Fig. 1 is'a'view of a three-quarter turn of one thread of a spiral separator illustrating one embodiment of'the invention; Fig. 2 is a plan showing one turn of the separator thread shown in Fig. 1;

1 Fig. 3- is an enlarged. section on line 33 of Fig. 2; f

Figs. 4 to 12 inclusive are details of detachable sections or'plates of diiferent styles adapted to be used on the separator;

Figs. 13 and 14: are views similar to Figs.

1 and 2'sh0wing an alternative structure;

Figs. 15 to 25 are detail vlews showing the corrugated jackets of whichv the separator runway 'is constructed, the sectional views being taken on the correspondingly numbered section'lines of the other views.

Referring first to the embodiment of the invention illustrated in Figs. 1 to 8, the separator includes a central supporting post 1 which carries a number of upwardly inclined radially extending supporting rods 2. The rods 2 are spirally arranged and form supports for the multiplicity of segmental plates or jackets 3 which collectively constitute the spiral floor or runway of the separator thread. The jackets 3 overlap each other along their adjacent radial edges and are secured'to' the supporting rods by screws or bolts: 4 preferably havingcountersunk heads so as not to interfere with the travel of the material on the separator. Certain of the jackets are corrugated to form a series of closely arranged ridges5, andfother jack-- ets 5 for example, are smooth and have detachable sections 6 mounted thereon which are corrugated to form ridges 7', these sections being interposed between the overlapping portions of the jackets as shown in Fig. l. I

ig. 3 shows'best'the ridges which are located close to one another, so that a given lump of coal L or other material rides on, or' is supported byc'two or more ridges in its journey along thespiral runway. In other words, the surface ofcertain parts of rthe runway is interrupted by the ridges and each lump straddles two 'ormore of the ridges. The edges or peaks of the ridges therefore exert what'mayabelcalled an edge resistance or edge frictionon the material. The runway'ma'ybe formed of a'series of alternately arranged corrugated sections 3 and plain sections 3* having detachable'sectional covers 6 secured thereto as shown in Fig. 2 .or all ofthe jackets may becorrugated as shown in-Figs. 13 and'14e, i i

The ridges on the jackets may be straight and inclined inwardly and downwar'dlyas in Figs- 1, and 2, or they may be concentric with the axis of the separator as shown in Figs. 13 and 14.- The corrugated detachable sections 6 can be shaped or proportioned to cover difierent areas of the surface of the jackets 3 and the ridges may be either curved or straight and arranged to extend in different directions as shown in Figs. 4 to 12,.s -as to assist in controlling the frictional effect and the directionof travel of the material along difl'erentportions of the runway.

Figs. 15' to24: illustrate-various-ways which the runway jackets may'becorrugated to suit different classes of coal or other materials. In Figs. 15 and 16 the'jacket is corrugated to forma series of ridges 5 which are substantially concentric with the axis of the separator, the ridges being ofuniform height.

Fig. 17 illustrates a jacket 1h which the I corrugated to form substantially parallel ridges curved in plan on involute curves and adapted to exert friction on the slaty and other waste materials and direct them to an inner path on the runway.

Figs. 20 and 21 show a pair of adjacent jackets in which the ribs 5 are grouped in rows 8 spaced apart from one another, the

rows on one jacket being staggered with respect to those on the adjacent jacket.

Figs. 22 and 23 show a further variation f the jacket in which the inner ridges are higher than. the outer ones 5".

Figs. 24 and 25 show the reverse arrange ment in which the outer ridges 5 are higher than the inner ones 5 the intermediate ridges being uniformly graded in size and height.

From the above it will be seen that I have devised an improved form of runway for coal separators and the like, and that l can construct the ridges in various conformations to suit the various classes of coal or other materials handled. It is known to those skilled in this art that coal from one vein often requires different treatment from that of other veins and it is apparent that utilizing one or a combination of several of the types of corrugated jackets herein de scribed I can readily adapt the separator for handling materials of widely difiering natural characteristics.

While- I have particularly described. and shown certain specific embodiments of my invention it is not to be interpreted that I am limited to such structures as changes in arrangement and substitution of equivalents may be made without departing from the spirit and scope of theinvention as defined in the appended claims.

What I claim is:

1. A spiral separator having a runway formed with a series of ridges adapted to exert an edge resistance on the material.

travelling thereon. said ridges being spaced so close together that the lumps of material travel on the peaks of two or more adjacent ridges.

2: A spiral separator runway including a;

plurality of jackets each formed with a series of closely grouped ridges adapted to jointly support the lumps on the peaks of the ridges and exert an edge friction on the lumps of material travelling on the runway.

3. A spiral separator including a runway comprising a plurality of'jackets of substantially triangular form, certain of said jackets having a series of closely grouped integral ridges formed thereon, said ridges being spaced close to one another so thatthe lumps can straddle the same and travel on the peaks thereof, and other smooth jackets having detachable sections secured thereto which partially cover them, said detachable sections also having closely grouped ridges formed thereon the ridges of the jackets and detachable sections being adapted to exert an edge resistance on thelumps of material travelling on the runway.

4s. A spiral separator including a. runway formed of a series of jackets having groups of closely arranged ridges thereon to form an interrupted supporting surface which the individual lumps travelling thereon straddle, said interrupted surface being arranged to exert an edge resistance on the lumps travelling over the runway, some of said ridges being curved in plan to control the direction of travel of the material.

5. A spiral separator including a runway formed of a series of jackets corrugated to form a multiplicity, of closely spaced integral adjacent ridges which jointly form a support for the individual lumps of material travelling on the runway and'which jointly exert a frictional resistance on the individual lumps.

6. A. spiral separator including a runway formed of a plurality of jackets having closely spaced ridges formed thereon to jointly support individual lumps of material travelling on the peaks of the ridges, the ridges on certain jackets being arranged differently than those on other jackets to produce different degrees of frictional resistance on theindividual lumps of material travelling on the runway at different locations thereof.

7. A spiral coal separator comprising a central supporting post having a series; of

signed my name.

FRANK PARDEE. 

